106 COLTTBKID^. 



/ 



6. Oxyrhopus doliatus. 



Oxyrhopus doliatus, Dum. S{ Bihr. vii. p. 1020 (1854). 

 formosus (»om Wied), Giinth. Cat. p. 190 (1858). 



Eye rather small, its diameter two fifths the length of the snout^ 

 which is rounded and scarcely projecting. Eostral broader than 

 deep, just visible from above ; internasals much shorter than the 

 prsefrontals ; frontal a little longer than broad, as long as its- 

 distance from the end of the snout, a little shorter than the parietals ; 

 loreal much longer than deep ; one prteooular, just reaching the 

 upper surface of the head and widely separated from the frontal ;, 

 two postoculars ; temporals 2 + 3 ; eight upper labials, fourth and 

 fifth entering the eye ; four lower labials in contact with the anterior 

 chin-shields, which are as long as or a little longer than the posterior. 

 Scales in 19 rows. Ventrals 183-199 ; anal entire ; subcaudals 

 61-80 pairs. Above with broad black annuli ; the anterior much 

 wider than the red or reddish-brown interspaces between them ; 

 head black above, with a light occipital blotch or a narrow collar > 

 the black annuli may be interrupted on the beUy ; the red scales- 

 tipped with black. 



Total length 550 millim. ; tail 115. 



Brazil. 



A, Annuli complete, broad. 



a. Yg. (V. 199; 0. 61). ? Messrs. Veitch [P.].. 



B. Annuli interrupted on the belly, all except the six or seven. 



anterior much narrower than the red interspaces. 



a, b. d (V. 186, 183 ; 0. 77, 80). ? Zoological Society.- 



7. Oxyrhopus formosus. 



Coluber formosus, Wied, N. Acta Ac. Leop. Carol, x. 1820, i. p. 109,. 



Beitr. Nat. Bras. i. p. 381 (1825), and AbUld. (1826). 

 Duberria formosa, Fitzing. N. Class. Bept. p. 56 (1825). 

 Lycodon formosus, part., Schleg. Phys. Serp. ii. p. 113 (1837). 

 Oxyrhopus formosus, Dum. Sr Bihr. vii. p. 1022 (1854) ; Jan, Elencoy 



p. 93 (1863). 

 ? Oxyrhopus leucocephalus, Dum. ^ Bihr. t. o. p. 1038. 



Eye rather small, its diameter one third to two fifths the length 

 of the snout, which is rounded and feebly projecting. Eostral 

 broader than deep, just visible from above ; internasals much shorter 

 than the praefrontals ; frontal slightly longer than broad, as long as^ 

 its distance from the end of the snout, shorter than the parietals ; 

 loreal much longer than deep ; one prseocular, just reaching the 

 upper surface of the head and widely separated from the frontal ; 

 two postoculars; temporals 2+3; eight upper labials, fourth and 

 fifth entering the eye ; four lower labials in contact with the anterior 

 chin-shields, which are as long as the posterior. Scales in 19 rows, 

 Ventrals 182-203 ; anal entire ; subcaudals 51-73 pairs. Body 



